Question

我试图用C ++写一个基本的气象监测站，我有2个传感器写成类，我试图做一个基本程序来实现这些类和测试它们是否按预期运行。当我尝试构建项目时，Eclipse回复时出现以下错误消息，这使我认为我没有正确地包含我的头文件或其他内容。如果有人发现错误，请告诉我，谢谢！

./src/HelloWorld.o: In function `main':
/Debug/../src/HelloWorld.cpp:30: undefined reference to `pressureSensor::pressureSensor()'
/Debug/../src/HelloWorld.cpp:31: undefined reference to `temperatureSensor::temperatureSensor()'
/Debug/../src/HelloWorld.cpp:34: undefined reference to `pressureSensor::getReading()'
/Debug/../src/HelloWorld.cpp:31: undefined reference to `temperatureSensor::~temperatureSensor()'
/Debug/../src/HelloWorld.cpp:41: undefined reference to `pressureSensor::~pressureSensor()'
/Debug/../src/HelloWorld.cpp:31: undefined reference to `temperatureSensor::~temperatureSensor()'
/Debug/../src/HelloWorld.cpp:41: undefined reference to `pressureSensor::~pressureSensor()'
collect2: error: ld returned 1 exit status

这是项目的目录结构：

/workspaces
 - /src
   - /HelloWorld.cpp
 - /Sensors
   - /temperature.h
   - /temperature.cpp (compiles correctly and has entries for all member classes)
   - /pressure.h
   - /pressure.cpp (compiles correctly and has entries for all member classes)

以下是有问题的文件：

/src/HelloWorld.cpp

#include <iostream>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <cerrno>
#include <wiringPi.h>
#include <wiringPiI2C.h>
#include "../Sensors/pressure.h"
#include "../Sensors/temperature.h"

using namespace std;

int main(void) {

    if (wiringPiSetup()) {
        cout << "wiringPi is tangled, exiting." << endl;
    } else {
        cout << "wiringPi is untangled and ready." << endl;
    }

    pinMode(0, INPUT);
    pinMode(1, INPUT);

    pullUpDnControl(0, PUD_UP);
    pullUpDnControl(1, PUD_UP);

    pressureSensor pressure;
    temperatureSensor temperature;

    for (int i = 0; i < 5; i++) { 
            cout << pressure.getReading() << endl;
        cout << "GPIO 17: " << digitalRead(0) << endl;
        cout << "GPIO 18: " << digitalRead(1) << endl;
        cout << endl;
        usleep(150000);
    }

    return 0;

}

/Sensors/pressure.h

#ifndef PRESSURE_H_
#define PRESSURE_H_
#include "../BMP180/BMP180.h"

class pressureSensor {
public:
    pressureSensor();
    ~pressureSensor();
    int getReading();

private:
    SFE_BMP180 pressure;
      char status;
      double T,P,p0,a;
};

#endif /* PRESSURE_H_ */

/Sensors/temperature.h

#ifndef TEMPERATURE_H_
#define TEMPERATURE_H_

#define TMP102_ADDR 0x48
#define TMP102_CFGPTR1 0x01
#define TMP102_CFGREG1 0x61
#define TMP102_CFGREG2 0xA0
#define TMP102_CFGREGSO 0xE1

class temperatureSensor {
public:
    temperatureSensor();
    ~temperatureSensor();
    float getReading();

private:
    int TMPdevID;

};

#endif /* TEMPERATURE_H_ */

C ++自定义对象无法识别

0 个答案: